Winter position?? Yes, the blades can park in two positions but calling the upper one "winter" is personal opinion and technique, not something Lexus advertises. The upper lock position allows you to pull the wipers up and away from the glass while you're washing the car (or changing the blades) without the low part of the arm contacting the rear edge of the hood and rubbing/scratching the paint.
It's an interesting thought to use that feature in winter, but I kept mine down through 2 winters here in Dayton OH with no problems.
Obviously, the previous owner of my '10 350 kept them in the down position because I will have to get some touch up paint to fix the marks from the wipers on the hood edge. I will be moving mine to the up position. Nice to know. Thanks.
How do you adjust them ? Recently my wipers stopped parking all the way down. I'm wondering if this is the problem.
Thanks,
Ted